Author

Qing Li

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Preprint Sep 2026

MAGIC: Marginal-Guided Compression with Optimal Transport for Efficient Visual Document Retrieval

Recent visual document retrieval (VDR) systems such as ColPali use multi-vector page embeddings, in which patch-level vectors enable fine-grained evidence matching but incur substantial index storage and MaxSim scoring overhead. Post-hoc merging offers a practical route to efficient VDR by reducing this cost without re...

Xu Yuan, Hua Liu, Wen-Qi Fan et al. · 0 citations

Jul 2026

HVM-GraphRAG: Holistic-View Multimodal Graph Retrieval-Augmented Generation on Complex Document

Question answering (QA) over complex documents requires models to retrieve and integrate evidence distributed across distant document regions and modalities. Multimodal GraphRAG provides a promising direction by organizing document evidence with graph structures. However, existing methods often suffer from unreliable c...

Xingbo He, Yi-Li Wang, Wenqi Fan et al. · arXiv.org · 1 citation